NAS
13 God said to Abram, "Know for certain that (16) your descendants will be strangers in a land that is not theirs, where (17) they will be enslaved and oppressed (18) four hundred years.
14 "But I will also judge the nation whom they will serve, and afterward they will come out (19) with many possessions.
15 "As for you, (20) you shall go to your fathers in peace; you will be buried at a good old age.
16 "Then in (21) the fourth generation they will return here, for (22) the iniquity of the Amorite is not yet complete."
KJV
13 And he said unto Abram, Know of a surety that thy seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years;
14 And also that nation, whom they shall serve, will I judge: and afterward shall they come out with great substance.
15 And thou shalt go to thy fathers in peace; thou shalt be buried in a good old age.
16 But in the fourth generation they shall come hither again: for the iniquity of the Amorites is not yet full.
NKJ
13Then He said to Abram: "Know certainly that your descendants will be strangers in a land that is not theirs, and will serve them, and they will afflict them four hundred years. 14And also the nation whom they serve I will judge; afterward they shall come out with great possessions. 15Now as for you, you shall go to your fathers in peace; you shall be buried at a good old age. 16But in the fourth generation they shall return here, for the iniquity of the Amorites is not yet complete." 17And it came to pass, when the sun went down and it was dark, that behold, there appeared a smoking oven and a burning torch that passed between those pieces.
YLT
13 and He saith to Abram, `knowing -- know that thy seed is a sojourner in a land not theirs, and they have served them, and they have afflicted them four hundred years,
14 and the nation also whom they serve I judge, and after this they go out with great substance;
15 and thou -- thou comest in unto thy fathers in peace; thou art buried in a good old age;
16 and the fourth generation doth turn back hither, for the iniquity of the Amorite is not yet complete.'
Four generations = Four hundred years? 100 years for each generation? Really? Do you think, maybe, that God is speaking symbolically here? Just maybe?
How old was Abraham when he died? How old was Moses? Your sarcasm only notes your inability to understand what a Generation was in early biblical times
You may want to read what Moses wrote..
My God speaks with authority
Note he said the "time of the Armorite was not yet complete?"
1Ki 21:26 And he did very abominably in following idols, according to all [things] as did the Amorites, whom the LORD cast out before the children of Israel
And did God mean 400 years?
Exd 12:40 Now the sojourning of the children of Israel, who dwelt in Egypt, [was] four hundred and thirty years
My God speaks truth to His people
Num 23:19 God [is] not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do [it]? or hath he spoken, and shall he not make it good?
Do you have anywhere else in the Bible where that is so? I noticed you only quoted different translations, not different scritpure verses. If it is a uniform concept that one generation is 100 consistently throughout the Bible, could you please post some other verses to confirm this?
Num 23:19 God [is] not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do [it]? or hath he spoken, and shall he not make it good?
Do you understand the context of that verse? Balak, the king of Moab, had heard of the victories that the Israelites had won right near Moab (Num. 21:21-34), and was afraid that they would destroy Moad as well, so he sent for Balaam to curse the Israelites. However, the LORD said to Balaam that he would not curse them, for they are blessed (Num. 22:12). Balaam later vows to the LORD to only speak the words that the LORD give him, thus when Balaam is allowed to go to Balak, and Balak thinks that Balaam is going to curse the Israelites, Balaam instead speaks the word of the LORD and blesses them.
That is the context of that verse, simply that the LORD has promised to bless the Israelites and not curse them, and the words He gives to Balaam are faithful to that promise. The specificity that you (and others) want to apply to that specific text just isn't there.
If I promise to give my kids breakfast, I can give them toast and jam, or cereal, or scrambled eggs, or pancakes; but by giving my children any of these, I have fulfilled my promise. That is all that is going on here. Yes, the LORD is faithful to His promises! Amen and Amen!! However, in general, His promises are not as specific as we would like to think they are (which is why any discussion about the birth, life, death and resurrection of Christ does not apply here, because those promises were specific, and specifically fulfilled.)
So, in the end, project what you want onto Num. 23:19, but in my opinion you are reading in waaaay too much specificity into that verse.